Java Engineer (FIX / Trading APIs)

Java Engineer (FIX / Trading APIs)

Location: London (Hybrid)

Compensation: Strong base + bonus + flexible benefits

The Role

This is a front-office engineering role, not a generic backend position.

You’ll be building institutional-grade trading connectivity, sitting directly on the execution pathway between clients and the market.

The platform you’ll work on handles:

This is revenue-impacting infrastructure, not internal tooling.

What You’ll Be Doing

Designing and building high-performance Java services powering trading APIs
Developing and optimising FIX connectivity for institutional clients
Owning end-to-end delivery — from design through to production
Improving latency, throughput, and system resilience
Working closely with product and commercial teams on client-driven requirements
Building scalable, cloud-native services with strong observability and automation

Tech Environment

What They’re Looking For

Strong Java engineering fundamentals in real-time or distributed systems
Experience building external-facing APIs or connectivity layers
Understanding of performance optimisation and system design under load
Exposure to trading systems, fintech, or low-latency environments is highly relevant
Engineers comfortable operating in high-impact, production-critical systems

Why This Role

Direct ownership of client-facing trading infrastructure
Work that sits close to revenue and execution, not buried in internal systems
A genuine opportunity to build and shape platform capability, not just maintain it
Environment that values:
Engineering quality
Delivery speed
Pragmatic problem solving

Who This Suits

Engineers already in trading / FIX environments looking for more ownership
Strong backend engineers wanting to move into capital markets infrastructure
Developers who prefer high-impact systems over low-stakes microservices work

Working Model

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Job Details